Vacuum street-cleaning machine.



G. H. DUTHIE.

VACUUM STREET CLEANING MACHINE.

APPLICATION FILED JULY 14. 1911.

Patented Aug. 12

2 SHEET$SHEET 1.

R O a 0 fl .6 r w 6 WITNESSES Attorney G. H. DUTHIE. VACUUM STREET CLEANING MACHINE. APPLICATION FILEDJULY 14, 1911.

g 'yg V Patented Aug. 12, 1913.

2 SHBETS-SHEET 2.

WITNESSES l/Vbfli/V 7 0}? fried by the adjacent side bar 1 of the frame- "fwork and'project-s outwardly and'laterally therefromand 1s journaled at its outer end 21. The shaft is provided with another an a bearing formed on the'rear endjof a longitudinally disposed bracket. 16 which is riveted or otherwise securedto the outer end pf a transversely e'Xtendingcha-nnel' bar 15, said: bar being secured to the side bars 1 of ttiefframe-work and projecting outwardly on both sides of the latter. The shaft 176' is provided 'at' its outer end with a sprocket wheel. 17. {A chain 18 extends over the sprocket wheel 17 and over anotherwheel 19, which is secured to a shaft 20, said shaft 'belng' journaled at its ends'inhanger arms sprocket 'wliee'l22 and a chain23 passes'over tsaidlla stnamed sprocket wheel and over a sprocket wheel '24 on a transversely extending shaft- 25 journale d in hanger arms26 corresponding to the hanger arms 21. These l an gerjaiimstm and 26 are suspended from the rear and forward ends of the bracket 16 ls'efere mentioned and are connected together ry-rbra'ce bars 27. It will thus be understoodj that both shafts, namely, 20 and 25,

' are simultaneously rotated. Brushes ZS are mounted'on the respective shaft-s 20 and 25,

: said brushes extending= entirely across the frame-work underneath the latter and being adapted to rest upon the pavement or roadthe..branchis secured, said flue 33 extending upwardly bet-ween the water tank or reserivoir 3 and the receptacle 5 and elevated v acuum tank,4 and opening into the latter at the rear,end'thereof, as clearly indicated in Fig." 1. Connected to the forward end of the vacuum tank'fi, is a suction pipe 34 which extends downwardly just behind the cab 2 and which is connected to'a suction pump 35, the shaft 36 of whichcarries a pulley 37, over which a belt 38 passes, said b'elt also extending ai'ound a pulley 39 on the shaft 8 of the engine.

39 may be coupled to or uncoupled from the main drive shaft of the engine whenever'it is desired to operate or render inoperative the suction pump.

At? each side of the vehicle andin the present .embodiment' of the invention, susy I the frame-work immediately underneath the suction pump 3 5,.is hanger' ended from 40 designates a clutch, whereby the pulley or bracket 41, said brackets being secured the ends of transversely extending and 1011-9 .gitudinally spaced frame bars 41 which are riveted or otherwise secured to the side bars 1 of the main frame-work and which project outwardly in a lateral direction therefrom.

The hangers 41 support a'conveyer shaft 42, said shaft having secured thereto, right and left-hand spiral conveyer flights 43, whereby the dirt collected in the casing of the conveyer will be carried to an upwardly and rearwardly inclined elevator 44 which is operated by the shaft 42 and which is designed to deposit-.the-dirt and dust into'the top ofv the receptacle 5. It will be understood that there are two of these elevators, one on each side of the vehicle. -In order to operate the conveyer, the'shaft 42 is provided at each end with a sprocket wheel 45, over which asprocket chain 46 passes, said chain also passing around a sprocket wheel 47 on the shaft 16. c

At the rear of the conveyor 43, a trailing transversely extending plate 48 is mounted, said plate being pivotal-1y connected at its upper forward edge, as indicated at 48 to the brackets 41. Over this trailing plate 48, an endless flexible scraper 49 is adapted to operate, so as to scrape the-dust and dirt from the surface of the ground and convey itforwardly and upwardly and deposit it into the conveyer 43. The flexible scraper 49-is suspended at its forward end, as at 50, on a rod or shaft which is journaled at its ends in the brackets 41 and is mounted at its. rear end on a shaft 51 which is journaled ,in hangers 52 supported by: the ends of a transversely extending frame bar 52. A sprocket wheel 53 is secured to the shaft 51 at each end thereof, and over each of said sprocket wheels 53, a chain 54'passes, said chain also passing around a sprocket wheel 55 on the adjoining end of the adjacent shaft 16. It will thus beunderstood that the shafts 16 on opposite sides-of the vehicle drive the brushes, the conveying and elevating mechanism and the scraping chain. In order to render all ofthese parts inoperative without stopping the vehicle, I provide each of the shafts 16 with a clutch operated by a shipper lever 56. The frame bar 52f which, as before stated, supports the hangers 52, is riveted or otherwise secured to the sidebars 1 of the main'framework and projects outwardly therefrom, as clearly in- :loos'enjup the dirt and dust and carry the heayier particles upwardly and'forwardlyi; efizey l 1 I pin-tides, (i up in between "i e? of the moods up ch gii the flue 33 inte the vacuum tank by the SUCMOD action of pump 35 and siiction pi whee accoi'npanyin'g drawings ilh'isirate What believe to be the preferred, enibedimei t 0 ii" ition ii s v 7 steed Q EC Len-ding ti'ziiisverseiy i'eo" memes for rotating euid brushes ee'is partially encircling the J 1' close to the lower flier-emf each hood embodying lfifCOQCQIlQiC x'miis spaced from inner 'wei is conforming :emvz: 31y

Walls 1min flue connected at its lower end to one of said hoods and oominunieating with the space between the Walls thereof, a branch flue connected so said main fine and communicating with the space between the walls of the other hood, a Vacuum tank coiinee'ifed to the upper end the main. flue, and inemie 'E-i l ifiiflil said t ineiuding and F622? rot-u V i."

I 4, {EllllE-Wiflii and. amending p thereof, sepesrazie hoods partially en the brushes and emboiying inner 11211 0 ite concentric er-ails s inner walls L bi'uehes and been id" t0 the lowermost some 0 11min flue connected at its 0W 4. x- I}.

of said 110065 and com! mating in, the

thereof 8 we eonnecte i to said. 21min flue zine eomnm meeting with the space between the o e fileother hood, a vacuum tank (tonnes one end in the uppei." en of ihe 12min '1 a suction pipe eminee'ted $0 the 0 her end. o

l; the vacuum tank and amending (i Y thezefrem, ii suction aur mim Lower end of i 5 my operat or the urmee i U meieof, separate heads partially encircling the brushes and em bedying inner ami outer concentric Walls spaced from each other, theconforming closely to the rushes; and both avails extemiing down close 50 the lowermost paint of the brushes, 2i 

